It sounds like you do not have it threaded right, completely rethread it and make sure that you have a fresh needle in the machine. Reread your manual, I am sure that something is wrong in the top threading. If, you misplaced your manual go to singerco.com and download it for free.

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Although there could be several reasons, this is generally called bird nesting or thread nesting. It is usually a result of loose upper tension, mis-threading, or possibly a needle/thread/fabric incompatibility.

#1--when you thread, make sure you ALWAYS raise the presser foot so the thread seats in the tension disk. And, be sure to change the needle often...

Birdnesting is a common but very frustrating problem that can be resolved easily once you know where the problem originates. Remember, if the birdnesting occurs on the underside of the fabric, the problem originates with the upper thread. If it shows on the top of the fabric, the problem is the bobbin.

Very often, the machine is not threaded correctly. Remove all the thread from the machine. Check there are no loose threads or lint stuck anywhere in the machine. Oil as instructed in the manual.

Install a brand new needle! The needle should be suitable for the thread and fabric you are using. All About Needles

ALWAYS RAISE the presser foot and rethread the upper thread. Verify the path is correct.

This mess is commonly referred to as a bird's nest or 'birdnesting' and it's usually caused by incorrect top tension and that's often caused by the top thread not in the correct path. (For me, I occasionally forget to thread through the take-up lever.) A damaged needle can also cause birdnesting.

The needle thread breaks
1. the needle thread is not threaded properly
2. The needle thread tension is to tight
3. The needle is bent or blunt
4. The needle is incorrectly inserted
5. The needle thread & the bobbin thread are not set under the presser foot when starting to sew
6. the threads were not drawn to the rear after sewing
7. The thread is either to heavy or to fine for the needle

the feeder bar, do you mean the feeddogs, that are in the needle plate?

"Birdnesting" occurs when there is no tension on the needle thread to pull the bobbin thread. This is easily corrected by rethreading the machine, following the threading path carefully and making sure the thread is fully engaged in the tension mechanism.